PtRu/graphene nano electro-catalyst and preparation method thereof
An electrocatalyst, graphene technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. problem, to achieve the effect of energy saving efficiency and high electrocatalytic activity
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Embodiment 1
[0018] 160mg of graphite oxide nanosheets were dispersed in 300mL of glycerol by ultrasonic treatment, then 4mL of 0.05M chloroplatinic acid solution, 4mL of 0.05M ruthenium chloride solution and 3.0mL of 1.0mol / L sodium acetate solution were added, And stir well to mix well. The homogeneous mixture was transferred to a microwave hydrothermal reaction kettle, heated by microwave radiation for 8 minutes, cooled, filtered, fully washed with acetone and deionized water, and dried at 90°C to obtain a PtRu / graphene nano-electrocatalyst. The PtRu alloy nanoparticles in the PtRu / graphene nano-electrocatalyst are highly dispersed on the graphene nanosheets and have a uniform particle size, with an average particle size of 3.0 nm. According to EDX analysis, the mass fraction of PtRu alloy in the catalyst is 29.5%, close to its theoretical value of 30%, and the atoms of PtRu alloy are Pt:Ru=1:1.
[0019] As a comparison, use XC-72 nano-carbon and carbon nanotubes (carbon nanotubes with...
Embodiment 2
[0022] 160mg of graphite oxide nanosheets were dispersed in 150mL of ethylene glycol by ultrasonic treatment, then 4mL of 0.05M chloroplatinic acid solution, 4mL of 0.05M ruthenium chloride solution and 2.0mL of 1.0mol / L sodium acetate solution were added, And stir well to mix well. The homogeneous mixture was transferred to a microwave hydrothermal reaction kettle, heated by microwave radiation for 5 minutes, cooled, filtered, fully washed with acetone and deionized water, and dried at 85°C to obtain a PtRu / graphene nano-electrocatalyst. The PtRu alloy nanoparticles in the PtRu / graphene nano-electrocatalyst are highly dispersed on the graphene nanosheets, and have a uniform particle size, with an average particle size of 2.9 nm. According to EDX analysis, the mass fraction of PtRu alloy in the catalyst is 29.1%, close to its theoretical value of 30%, and the atoms of PtRu alloy are Pt:Ru=1:1.
[0023] As a comparison, use XC-72 nano-carbon and carbon nanotubes (carbon nanotu...
Embodiment 3
[0026] 160mg of graphite oxide nanosheets were dispersed in 500mL of ethylene glycol by ultrasonic treatment, then 4mL of 0.05M chloroplatinic acid solution, 4mL of 0.05M ruthenium chloride solution and 2.5mL of 1.0mol / L sodium acetate solution were added, And stir well to mix well. The homogeneous mixture was transferred to a microwave hydrothermal reaction kettle, heated by microwave radiation for 10 minutes, cooled, filtered, fully washed with acetone and deionized water, and dried at 80°C to obtain a PtRu / graphene nano-electrocatalyst. The PtRu alloy nanoparticles in the PtRu / graphene nano-electrocatalyst are highly dispersed on the graphene nanosheets, and have a uniform particle size, with an average particle size of 2.9 nm. According to EDX analysis, the mass fraction of PtRu alloy in the catalyst is 30.5%, which is close to its theoretical value of 30%. The atoms of PtRu alloy are Pt:Ru=1:1.
[0027] As a comparison, use XC-72 nano-carbon and carbon nanotubes (carbon ...
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